Resumo

TOLEDO BRUZUAL, Valentina. Quantification of the regressive erosion for headcut and loss of soil in gullies in the sector of Susucal, estado Lara, Venezuela. Revista de Investigación [online]. 2013, vol.37, n.80, pp.117-138. ISSN 1010-2914.

In  the  Depression  of  Carora,  Lara  state,  specifically  in  the  town  of Susucal,  erosive  forms  well  developed  gully  on  thick  alluvial  sediments are  observed.  This  paper  analyzes  the  morphology  of  acarcavada from  different  techniques  and  starts  down  headcut  retreat  rate  erosion estimation and quantification of the volume of soil lost in three gullies. Its geomorphological evolution tends to the increase in the size of headers and  edges  of  the  gullies,  (retreat  rate  of  2.05,  4.56  and  4.72  m/year  in the  gullies,  “A”,  “B”  and  “C”,  respectively.).  The  first  data  obtained  in the quantification of the current dynamics of these processes, are running at a rate of erosion of 2223,83 m 3  a year, high considering the monitored extension 1350,2 m 2 .The detailed study of these forms of erosive riled will help in proper planning and management of the land in this area which is partly included in the future of the Morere River.

Palavras-chave : Erosion  hydric; gullies; Carora  Depression; regressive erosion.

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